Trinuclear and Mononuclear Lanthanoid Complexes Containing 2-Methyl-8-quinolinolate: Synthesis, Structures, and Magnetic Properties

Nurul F. Ghazali, Wasinee Phonsri, Keith S. Murray, Peter C. Junk, Glen B. Deacon, David R. Turner

Research output: Contribution to journalArticleResearchpeer-review

2 Citations (Scopus)

Abstract

Two series of new lanthanoid complexes containing 2-methyl-8-quinolinolate (MQ) have been prepared at elevated temperatures. Lighter elements yield trinuclear complexes [Ln3(MQ)9(HMQ)]·5H2O·3MeOH (1Ln, where Ln = Pr, Eu, Gd, Tb, Dy and Ho) by solvothermal reactions, and heavier lanthanoids yield the mononuclear complexes [Ln(MQ)3(HMQ)]·HMQ·MeOH (2Ln, where Ln = Dy, Ho, Er and Yb), with overlap between the two series found in the cases of Dy and Ho. Magnetic studies reveal that 1Tb, 1Dy, and 2Er show distinct slow magnetic relaxation under external DC fields. The magnetic data for 1Gd yielded the J value for weak antiferromagnetic coupling and the magnetocaloric –ΔSm value of 20 J kg–1 K–1 at 2 K and ΔH = 5 T.

Original languageEnglish
Pages (from-to)2549-2557
Number of pages9
JournalEuropean Journal of Inorganic Chemistry
Volume2019
Issue number20
DOIs
Publication statusPublished - 2 Jun 2019

Keywords

  • Lanthanide contraction
  • Lanthanides
  • Magnetic properties
  • Quinaldinolate
  • Structure elucidation

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